Cutter for animal-shears.



M. W. McARDLB.

CUTTER FOR ANIMAL SHEARS.

APPLIOATION FILED DBO. 1, 1911.

Patented Mar. 5, 1912.

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Clawkm tively thin sheet metal stamped up into shape UNI ED STATESPATENT OFFICE.

MICHAEL W. MCARDLE, OF CHICAGO, ILLINOIS, ASSIGNOR T0 CHICAGO FLEXIBLESHAFT COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

CUTTER FOR ANIMAL-SHEARS.

To all whom it may concern Be it known that 1, MICHAEL WV. Mo- ARDLE, acitizen of the United States, residing at Chicago, in the county of Cookand State of Illinois, have invented new and useful Improvements inCutters for Animal- Shears, of which the following is a speci fication,reference being had to the accompanying drawings, forming a partthereof.

The purpose of this invention is to provide an improved form ofoscillating cutter for animal shears.

It consists of the features of construction described and shown in thedrawings as indicated in the claims.

In the drawings :Figure 1 is a perspective View of the cutter embodyingthis in Vention. Fig. 2 is an enlarged detail plan view of a portion ofthe cutter shown in Fig. 1. Fig. 3 is a sectional view taken asindicated at line 33 on Fig. 2.

The cutter, A, illustrated in Fig. 1, is in general of the familiar typenow almost universally employed in animal shears, being arranged thereinfor transverse vibratory movement of its three sharpened teeth upon astationary comb, for the purpose of shearing the wool placed between theteeth of such comb by guidance of the teeth over the body of the animalto be sheared. Preferably, such cutter is made from comparaandsubsequently hardened and tempered to secure durability of the cuttingedges. In the shearing tool, the vibrating element is constructed with apair of projecting lugs or pins which engage the two apertures, A of thecutter, A, for transmitting the vibratory move ment thereto. But whensuch cutter is formed of thin material and hardened, the pins orprojections of the vibratory member are subjected to very rapid wearthrough their con- Specification of Letters Patent.

Application filed December 1, 1911.

Patented Mar. 5, 1912.

Serial No. 663,390.

tact with the hardened edges of the aper- V tures, A with obviouslydetrimental results in operation. The improvement which is the subjectof this invention consists in lining these edges of the apertures, Awith softer and less abrasive material in the form of a metal eyelet, B.This eyelet has the familiar form of a hollow cylinder with flanged endsby which it is retained in place in the aperture, A of the cutter, A.This arrangement is clearly indicated by Fig. 3, and need not be furtherdescribed.

, I claim 1. A cutter for animal shears comprising a die-formed cuttingelement of sheet metal provided with an aperture adapted to receive thedriving pin of a shearing tool, and a bushing of softer material securedin such aperture as a lining for the edge thereof.

2. A cutter for animal shears comprising a die-formed cutting element ofhardened sheet metal provided with an aperture adapted to receive thedriving pin of a shearing tool, and a bushing of softer metal secured insuch aperture as a lining for the edge thereof.

3. A cutter for animal shears comprising a die-formed cutting element ofhardened sheet metal provided with an aperture adapted to receive thedriving pin of a shearing tool, and an eyelet of softer materialpositioned in such aperture for lining the edge thereof and formed withflanges clenched against the opposite faces of the material of thecutter.

In testimony whereof, I have hereunto set my hand, at Chicago, Illinois,this 28th day of November, 1911.

MICHAEL V. MOARDLE.

Vitnesses E. CUNNINGHAM, M. GERTRUDE ADY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

